<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <!-- <el-form-item label="资讯标题" prop="title">
        <el-input v-model="queryParams.title" placeholder="请输入资讯标题" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="发布者id" prop="authorId">
        <el-input v-model="queryParams.authorId" placeholder="请输入发布者id" clearable @keyup.enter.native="handleQuery" />
      </el-form-item> -->
      <!-- <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item> -->
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
          v-hasPermi="['news:news:add']">发布</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate"
          v-hasPermi="['news:news:edit']">修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple" @click="handleDelete"
          v-hasPermi="['news:news:remove']">删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport"
          v-hasPermi="['news:news:export']">导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="newsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="序号" align="center" prop="newsId" />
      <el-table-column label="资讯标题" align="center" prop="title" />
      <el-table-column label="资讯内容" align="center" prop="content">
        <template slot-scope="scope">
          <span @click="showFullContent(scope.row.content)" >
            {{ scope.row.content | truncate(100) }}
          </span>
        </template>
      </el-table-column>
      <!-- <el-table-column label="发布者id" align="center" prop="authorId" /> -->
      <el-table-column label="发布时间" align="center" prop="createTime" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime, '{y}-{m}-{d} {h}:{i}:{s}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
            v-hasPermi="['news:news:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
            v-hasPermi="['news:news:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize"
      @pagination="getList" />

    <!-- 添加或修改家教资讯对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="资讯标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入资讯标题" />
        </el-form-item>
        <el-form-item label="资讯内容">
          <editor v-model="form.content" :min-height="192" />
        </el-form-item>
        <!-- <el-form-item label="发布者id" prop="authorId">
          <el-input v-model="form.authorId" placeholder="请输入发布者id" />
        </el-form-item> -->
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <el-dialog :visible.sync="dialogVisible" width="600px">
      <div v-html="fullContent"></div>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">关闭</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listNews, getNews, delNews, addNews, updateNews } from "@/api/news/news";

export default {
  name: "News",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 家教资讯表格数据
      newsList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        content: null,
        authorId: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        title: [
          { required: true, message: "资讯标题不能为空", trigger: "blur" }
        ],
        content: [
          { required: true, message: "资讯内容不能为空", trigger: "blur" }
        ],
      },
      dialogVisible: false,
      fullContent: ''
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询家教资讯列表 */
    getList() {
      this.loading = true;
      listNews(this.queryParams).then(response => {
        this.newsList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        newsId: null,
        title: null,
        content: null,
        authorId: null,
        createTime: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.newsId)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    /** 新增按钮（发布家教资讯）操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "发布家教资讯";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const newsId = row.newsId || this.ids
      getNews(newsId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改家教资讯";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.newsId != null) {
            updateNews(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addNews(this.form).then(response => {
              this.$modal.msgSuccess("发布成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const newsIds = row.newsId || this.ids;
      this.$modal.confirm('是否确认删除家教资讯编号为"' + newsIds + '"的数据项？').then(function () {
        return delNews(newsIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('news/news/export', {
        ...this.queryParams
      }, `news_${new Date().getTime()}.xlsx`)
    },
    showFullContent(content) {
      this.fullContent = content;
      this.dialogVisible = true;
    }
  },
  filters: {
    truncate(value, length) {
      if (!value) return '';
      if (value.length <= length) return value;
      return value.substring(0, length) + '...';
    }
  }
};
</script>
